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5 Written questions

5 Matching questions

  1. units of pressure
  2. if one of the acoustic variables of pressure, density, and distance has a rhythmic oscillation then
  3. interference of waves with different frequencies
  4. what are some different types of waves
  5. what is constructive interference
  1. a when the frequencies of the waves differ, both constructive and destructive interference occur
  2. b sound, light, magnetic, and heat
  3. c that wave is a sound wave
  4. d pascals (Pa)
  5. e the interference of a pair of in phase waves forms a single wave of greater amplitude than either of its components--the resulting wave is larger than its components

5 Multiple choice questions

  1. sound pulses through biologic tissue or media and reflections arising from structures in the body return to the xducer and are processed into images
  2. sound must travel through a medium, it cannot travel through a vacuum
  3. sound is a mechanical longitudinal wave that moves by compression and rarefaction--particles in the medium vibrate back and forth from a fixed position
  4. the resultant wave is smaller (of lesser amplitude) than either one of its components
  5. the molecules are alternately compressed and rarefied (stretched apart)

5 True/False questions

  1. interferencewhen multiple beams arrive at an identical location at exactly the same time and thereby lose their individual characteristics and combine to form a single wave


  2. transverse wavea pair of waves are considered in phase when their peaks (maximum values) and troughs (minimum values) occur at the same time and in the same location


  3. what do waves doall waves carry energy


  4. how are sound waves identifiedoscillations in acoustic variables


  5. units of distancepascals (Pa)